Hi,
On Wed, 2015-04-29 at 12:57 -0700, Adam Moore wrote:
> On Mon, Apr 27, 2015 at 8:26 AM, Olivier Pinel (opinel)
> <[email protected]> wrote:
> > Hello,
> >
> > I am facing a random issue with NTP time setup when conman starts.
> > I am using conman 1.27 (will try to reproduce with 1.29 tomorrow) with a
> > single ethernet connection.
> >
> > From my first investigation (I am quite new to conman code), I think there
> > is a race condition. In the failing case, it seems that DHCP response is
> > parsed after ethernet service goes to ready so timeservers are set but
> > timeserver_start has already been called and will not be again until a new
> > state changed.
> >
> > I've managed to catch attached traces where there is one success and one
> > failure.
> > Could you please have a look and tell me if my understanding is correct?
> > If so don’t we need to add a restart of time setup at each modification of
> > timeservers list?
>
> Hi Olivier,
>
> I'm experiencing a similar issue using Connman 1.28. I have a device
> running connman, a switch, and a network with a DHCP server. If I
> attach my device to the switch first, I will get a link local address
> and a transition to the "ready" state for the ethernet service. Then,
> if I attach the switch to the network, connman handles the dhcp lease,
> but no transition out of the ready state takes place, and thus no
> Wispr/online check, and thus no state change handling processing (such
> as NTP) occurs.
>
> Though my scenario is fairly controlled, this is a problem during a
> power outage, where a device and switch power up before a DHCP server
> is available.
>
> I'm still a newbie to the connman code too, but it seems like both of
> our problems would be solved if the state change processing (or just a
> timeserver sync) that occurs upon entry to the ready or online state
> is performed after each dhcp lease, though it might be tricky to do
> this cleanly since the handling code is suppressed if there is a state
> transition from a state to itself.
>
> Any advice on what would be appropriate to do here would be appreciated.
Thanks for the investigations! See if the patch on the mailing list
fixes your issues.
Cheers,
Patrik
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